IchinoFS.SDA: Ichino's feature selection method for symbolic data

Description Usage Arguments Details Value Author(s) References See Also Examples

View source: R/IchinoFS.SDA.r

Description

Ichino's method for identifiyng non-noisy variables in symbolic data set

Usage

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IchinoFS.SDA(table.Symbolic)

Arguments

table.Symbolic

symbolic data table

Details

See file ../doc/IchinoFSSDA_details.pdf for further details

Value

plot

plot of the gradient illustrating combinations of variables, in which the axis of ordinates (Y) represents the maximum number of mutual neighbor pairs and the axis of the abscissae (X) corresponds to the number of features (m)

combination

the best combination of variables, i.e. the combination most differentiating the set of objects

maximum results

step-by-step combinations of variables up to m variables

calculation results

..............

Author(s)

Andrzej Dudek andrzej.dudek@ue.wroc.pl, Justyna Wilk justyna.wilk@ue.wroc.pl Department of Econometrics and Computer Science, Wroclaw University of Economics, Poland http://keii.ue.wroc.pl/symbolicDA

References

Ichino, M. (1994), Feature selection for symbolic data classification, In: E. Diday, Y. Lechevallier, P.B. Schader, B. Burtschy (Eds.), New Approaches in Classification and data analysis, Springer-Verlag, pp. 423-429.

Bock, H.H., Diday, E. (eds.) (2000), Analysis of symbolic data. Explanatory methods for extracting statistical information from complex data, Springer-Verlag, Berlin.

Diday, E., Noirhomme-Fraiture, M. (eds.) (2008), Symbolic Data Analysis with SODAS Software, John Wiley & Sons, Chichester.

See Also

HINoV.SDA; HINoV.Symbolic in clusterSim library

Examples

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# LONG RUNNING - UNCOMMENT TO RUN
#data("cars",package="symbolicDA")
#sdt<-cars
#ichino<-IchinoFS.SDA(sdt) 
#print(ichino) 

Example output

Loading required package: clusterSim
Loading required package: cluster
Loading required package: MASS
Loading required package: XML

Attaching package: 'symbolicDA'

The following object is masked from 'package:clusterSim':

    .medoid

Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl_init' failed, running with rgl.useNULL = TRUE 
3: .onUnload failed in unloadNamespace() for 'rgl', details:
  call: fun(...)
  error: object 'rgl_quit' not found 

symbolicDA documentation built on Aug. 8, 2019, 5:03 p.m.